Has method in Scala

In Scala, we can use reflection to check whether a class has a method or not. Reflection is a powerful feature in Scala that enables us to inspect and manipulate classes, objects, and functions at runtime. The following are the steps to check if a class has a method in Scala:

Step 1: Import the necessary reflection libraries

import scala.reflect.runtime.universe._

import scala.reflect._

Step 2: Get the class symbol for the class whose method you want to check

val symbol = typeOf[MyClass].typeSymbol.asClass

Step 3: Get the method symbol for the method you want to check.

val methodSymbol = symbol.typeSignature.member(TermName("myMethod")).asMethod

Step 4: Check if the method symbol is defined in the class symbol using the "isMethod" method.

println(methodSymbol.isMethod)

Here's an example code snippet that demonstrates how to check if a given class has a method named "myMethod":

object ReflectionExample extends App {
  import scala.reflect.runtime.universe._
  import scala.reflect._
// Define a class with a method

  class MyClass {

    def myMethod() = println("Hello world!")

  }
// Get the class symbol for MyClass

  val symbol = typeOf[MyClass].typeSymbol.asClass
// Get the method symbol for the method named "myMethod"

  val methodSymbol = symbol.typeSignature.member(TermName("myMethod")).asMethod
// Check if myMethod is defined in MyClass

  println(methodSymbol.isMethod)

}

The output of the above code will be "true" since the method "myMethod" is defined in the class "MyClass".